Heat the vegetable oil in a wok or large, flat-bottomed pan over medium-high heat. Add the onion, garlic, and ginger; cook 3 minutes, or until soft.
Add the carrots, corn, and water; cook until the water evaporates and the carrots begin to soften – about 5 minutes. Add the quinoa, Brussels sprouts, ham, and snap peas. Cook 5 minutes.
In a small bowl, mix together the soy sauce, 2 tablespoons water, and sesame oil. Pour the sauce into the pan, mixing well to combine. Cook 2-3 minutes, or until the liquid is absorbed.